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232 lines
6.8 KiB
232 lines
6.8 KiB
<?php |
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// $Id$ |
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/** |
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* @file |
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* Base utilities used by the Islandora fedora module. |
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*/ |
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if (!function_exists('str_getcsv')) { |
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/** |
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* Functions that emulate php5.3 functionality for backwards compatiablity |
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* @param type $input |
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* @param type $delimiter |
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* @param type $enclosure |
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* @param type $escape |
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* @param type $eol |
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* @return type |
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*/ |
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function str_getcsv($input, $delimiter=',', $enclosure='"', $escape=NULL, $eol=NULL) { |
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$temp = fopen("php://memory", "rw"); |
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fwrite($temp, $input); |
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fseek($temp, 0); |
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$r = fgetcsv($temp, 4096, $delimiter, $enclosure); |
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fclose($temp); |
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return $r; |
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} |
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} |
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/** |
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* do curl |
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* @global type $user |
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* @param type $url |
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* @param type $return_to_variable |
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* @param type $number_of_post_vars |
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* @param type $post |
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* @return type |
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*/ |
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function do_curl($url, $return_to_variable = 1, $number_of_post_vars = 0, $post = NULL) { |
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global $user; |
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// Check if we are inside Drupal and there is a valid user. |
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if ((!isset($user)) || $user->uid == 0) { |
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$fedora_user = 'anonymous'; |
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$fedora_pass = 'anonymous'; |
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} |
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else { |
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$fedora_user = $user->name; |
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$fedora_pass = $user->pass; |
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} |
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if (function_exists("curl_init")) { |
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$ch = curl_init(); |
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$user_agent = "Mozilla/4.0 pp(compatible; MSIE 5.01; Windows NT 5.0)"; |
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curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE); |
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curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, FALSE); |
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curl_setopt($ch, CURLOPT_FAILONERROR, TRUE); // Fail on errors |
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curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1); // allow redirects |
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curl_setopt($ch, CURLOPT_TIMEOUT, 90); // times out after 90s |
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curl_setopt($ch, CURLOPT_USERAGENT, $user_agent); |
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curl_setopt($ch, CURLOPT_RETURNTRANSFER, $return_to_variable); // return into a variable |
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curl_setopt($ch, CURLOPT_URL, $url); |
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curl_setopt($ch, CURLOPT_USERPWD, "$fedora_user:$fedora_pass"); |
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//curl_setopt($ch, CURLOPT_HTTPAUTH, CURLAUTH_ANY); |
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if ($number_of_post_vars > 0 && $post) { |
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curl_setopt($ch, CURLOPT_POST, $number_of_post_vars); |
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curl_setopt($ch, CURLOPT_POSTFIELDS, "$post"); |
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} |
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return curl_exec($ch); |
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} |
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else { |
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if (function_exists(drupal_set_message)) { |
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drupal_set_message(t('No curl support.'), 'error'); |
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} |
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return NULL; |
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} |
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} |
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/** |
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* Fedora available |
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* @return type |
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*/ |
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function fedora_available() { |
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$response = do_curl(variable_get('fedora_base_url', 'http://localhost:8080/fedora') . '/describe'); |
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return strstr($response, 'Repository Information HTML Presentation') !== FALSE; |
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} |
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/** |
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* Returns a UTF-8-encoded transcripiton of the string given in $in_str. |
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* @param string $in_str |
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* @return string A UTF-8 encoded string. |
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*/ |
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function fix_encoding($in_str) { |
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$cur_encoding = mb_detect_encoding($in_str); |
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if ($cur_encoding == "UTF-8" && mb_check_encoding($in_str, "UTF-8")) { |
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return $in_str; |
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} |
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else { |
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return utf8_encode($in_str); |
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} |
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} |
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/** |
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* valid pid ?? |
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* @param type $pid |
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* @return boolean |
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*/ |
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function valid_pid($pid) { |
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$valid = FALSE; |
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if (strlen(trim($pid)) <= 64 && preg_match('/^([A-Za-z0-9]|-|\.)+:(([A-Za-z0-9])|-|\.|~|_|(%[0-9A-F]{2}))+$/', trim($pid))) { |
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$valid = TRUE; |
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} |
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return $valid; |
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} |
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/** |
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* Valid Dsid ?? |
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* @param type $dsid |
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* @return boolean |
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*/ |
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function valid_dsid($dsid) { |
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$valid = FALSE; |
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if (strlen(trim($dsid)) <= 64 && preg_match('/^[a-zA-Z0-9\_\-\.]+$/', trim($dsid))) { |
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$valid = TRUE; |
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} |
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return $valid; |
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} |
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/** |
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* fixDsid ?? |
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* @param type $dsid |
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* @return string |
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*/ |
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function fix_dsid($dsid) { |
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$new_dsid = trim($dsid); |
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$find = '/[^a-zA-Z0-9\.\_\-]/'; |
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$replace = ''; |
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$new_dsid = preg_replace($find, $replace, $new_dsid); |
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if (strlen($new_dsid) > 63) |
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$new_dsid = substr($new_dsid, -63); |
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if (preg_match('/^[^a-zA-Z]/', $dsid)) |
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$new_dsid = 'x' . $new_dsid; |
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if (strlen($new_dsid) == 0) |
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$new_dsid = 'item' . rand(1, 100); |
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return $new_dsid; |
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} |
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/** |
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* Function: get_collections_as_option_array |
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* |
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* Description: Returns an associative array of all collection objects in Fedora instance |
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* |
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* @return array |
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*/ |
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function get_collections_as_option_array() { |
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module_load_include('inc', 'fedora_repository', 'api/fedora_utils'); |
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$query = 'select $object $title from <#ri> |
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where ($object <dc:title> $title |
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and $object <info:fedora/fedora-system:def/model#hasModel> <info:fedora/islandora:collectionCModel> |
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and $object <fedora-model:state> <info:fedora/fedora-system:def/model#Active>) |
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order by $title'; |
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$url = variable_get('fedora_repository_url', 'http://localhost:8080/fedora/risearch'); |
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$url .= "?type=tuples&flush=true&format=csv&limit=1000&lang=itql&stream=on&query="; |
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$content = do_curl($url . htmlentities(urlencode($query))); |
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$list = explode("\n", $content); |
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array_shift($list); |
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$list = preg_replace('/info:fedora\//', '', $list); |
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$options = array(); |
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foreach ($list as $item) { //removes blanks |
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if ($item) { |
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$parts = explode(',', $item); |
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$options[$parts[0]] = $parts[1]; |
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} |
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} |
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unset($options['islandora:ContentModelCollection']); |
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return $options; |
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} |
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/** |
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* Function: get_content_models_as_option_array |
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* |
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* Description: Returns an associative array of all collection objects in Fedora instance |
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* |
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* @return array |
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*/ |
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function get_content_models_as_option_array() { |
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module_load_include('inc', 'fedora_repository', 'api/fedora_item'); |
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module_load_include('inc', 'fedora_repository', 'api/fedora_utils'); |
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$restricted = variable_get('fedora_namespace_restriction_enforced', true); |
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$allowed_string = variable_get('fedora_pids_allowed', 'default: demo: changeme: islandora:'); |
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$namespaces = explode(':', $allowed_string); |
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foreach ($namespaces as $namespace) { |
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if ($namespace) { |
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$allowed[] = trim($namespace); |
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} |
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} |
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$query = 'select $object $title from <#ri> |
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where ($object <dc:title> $title |
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and ($object <fedora-model:hasModel> <info:fedora/fedora-system:ContentModel-3.0> |
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or $object <fedora-rels-ext:isMemberOfCollection> <info:fedora/islandora:ContentModelsCollection>) |
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and $object <fedora-model:state> <info:fedora/fedora-system:def/model#Active>) |
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order by $title'; |
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$url = variable_get('fedora_repository_url', 'http://localhost:8080/fedora/risearch'); |
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$url .= "?type=tuples&flush=true&format=csv&limit=1000&lang=itql&stream=on&query="; |
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$content = do_curl($url . htmlentities(urlencode($query))); |
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$list = explode("\n", $content); |
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array_shift($list); |
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$list = preg_replace('/info:fedora\//', '', $list); |
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foreach ($list as $item) { //removes blanks |
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if ($item) { |
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$parts = explode(',', $item); |
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$item = new fedora_item($parts[0]); |
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$nameparts = explode(':', $parts[0]); |
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if (!$restricted || in_array($nameparts[0], $allowed)) |
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if ($item->get_datastream_dissemination('ISLANDORACM')) { |
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$options[$parts[0]] = $parts[1]; |
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} |
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} |
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} |
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return $options; |
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}
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